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钙盐沉淀-O_3-UBAF深度处理畜禽养殖废水试验 被引量:2

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摘要 畜禽养殖废水有机物、氨氮含量高,属于高浓度难降解废水。为了提升畜禽养殖企业应对环境保护压力的能力,试验采用钙盐沉淀-O_3-UBAF组合工艺将化学法、高级氧化、高级好氧处理相结合来深度处理畜禽养殖废水。结果表明:在进水pH值为8.7,氯化钙添加量为125 mg/L(反应60 min+沉淀120 min),臭氧氧化接触时间为60 min,臭氧添加量为40.5 mg/L,上流式曝气生物滤池A段(UBAFA)水力停留时间为3 h,气水比为4∶1,上流式曝气生物滤池B段(UABFB)水力停留时间为4.0 h,气水比为2.5∶1时,处理出水的化学需氧量(COD_(cr))及氨氮、总氮、总磷、悬浮物(SS)浓度分别小于90,17,30,2.5,20 mg/L,完全满足《畜禽养殖业污染物排放标准》(GB 18596—2001)相关指标的排放限值要求。该系统抗反冲洗干扰能力较强,75 min系统出水水质就能恢复正常。
出处 《黑龙江畜牧兽医》 CAS 北大核心 2019年第4期8-11,共4页 Heilongjiang Animal Science And veterinary Medicine
基金 江苏省高等学校青蓝工程人才项目 泰州市科技支撑计划(农业)项目(TN201602)
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